Patents by Inventor Hans Dieter Flieger

Hans Dieter Flieger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Packaging seal layer
    Patent number: 5912084
    Abstract: A seal layer formed from a thermoplastic polymer blend comprising (a) a non-polar, non-ionomeric polyolefin, and (b) a polar ethylene copolymer having carbon monoxide functionality, and its use to adhere adjacent thermoplastic films together to form a package. Since the bonding strength of the thermoplastic films to one another and to the seal layer is greater than the internal cohesion strength of the seal layer itself, the seal layer provides for an easy open package.
    Type: Grant
    Filed: February 5, 1997
    Date of Patent: June 15, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Karlheinz Hausmann, Hans Dieter Flieger, Heiko E. Schenck, David R. Sparrow
  • Package consumable in melt processing
    Patent number: 5789048
    Abstract: A consumable package for use in melt-processing operation comprises a container and a melt-processable product such as polymers, elastomers, or additives. The container is formed from a film made from a random ionomer copolymer comprising of ethylene and 20-45 wt % of an unsaturated monocarboxylic acid, the copolymer being neutralized with a metal ion such as lithium, sodium, magnesium, or zinc. The film has a low melting point and a stiffness of greater than 400 megapascals.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: August 4, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Hans Dieter Flieger